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LF18N408 Neodymium Woofer Speaker Unit 18 Inch Aluminium Basket Low Frequency Transducer

WOOFER Professional Low Frequency Transducer 4.0 - inch Inside/Outside copper voice coil 3000 Watt continuous program power handling 97 dB Sensitivity 25 Hz - 1 kHz Frequency range Hypervented magnetic structure for minimum power compression Triple roll surround and exponential cone geometry Double aluminum demodulation rings

INSTALL DIMENSION

GENERAL SPECIFICATIONS    
Nominal Diameter  18 / 457 inch / mm 
Rated Impedance 8 ohm
Program Power  3000 Watt
Power handling capacity  1500 Watt
Sensitivity 97 dB
Frequency Range  25 - 1000  Hz
Effective Piston Diameter 395 / 15.55 mm / inch
Max Excursion Before Damage (peak to peak)  58 / 2.28  mm / inch
Minimum Impedance  6 ohm
Voice Coil Diameter  4 / 102  inch / mm 
Voice Coil Material  Copper  
Voice Coil Winding Depth  38 / 1.41  mm / inch
Number of layers  2  
Kind of layer  inside / outside  
Top Plate Thickness  15 / 0.59  mm / inch
Cone Material  No pressed pulp  
Cone Design  Cone Design Curved  
Surround Material  Surround Material Polycotton  
Surround Design  Triple roll  
Magnets Material Neodymium   
Demodulating rings  Double  
     
     
MOUNTING INFORMATION    
Overall Diameter  465 / 18.31  mm / inch
Bolt Circle Diameter  442-447 / 17.4-17.6 mm / inch
Bolt Hole Diameter  6.5 / 0.25 mm / inch
Front Mount Baffle Cut-out  424 / 16.69  mm / inch
Rear Mount Baffle Cut-out  425 / 16.73  mm / inch
Depth  Depth 190 / 7.48  mm / inch
Volume occupied by the driver  5.5 / 0.22  liters / ft

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